very slow loop on windows

so i wrote an arduino code that sends values read off of pots and switches over ethernet with an xbee ethernet shield.

This works fine when i upload the software off of the mac arduino program and all of the analog values are sent very fast but when i upload off of my windows xp computer the values are SUPER slow, like half a second delay.

I know that it isn't the arduino because we used the same one for both computers and it worked fine with the mac, and i cant just use the mac software because that computer will be leaving my life soon. I also redownloaded & installed the software again, no changes. Anyone ever had a similar problem or cough fixed it?


format c:

and as usual: backups, backups, backups

Check with Process Monitor (from Microsoft Sysinternals) why is taking so long.